Turbine.



PATENTED J AN. 8, 1907.

F. D. MILLARDL TURBINE.

APPLIOATION FILED JULY 12, 1906.

%\ 1 VVENTOR v IVTNESSES 5 A tlomq 1' FRED D. MILLARD, OF BURLINGTON,

IOWA.

TURBINE.

To all whom it may concern:

Be it known'that I, FRED D. MILLARD, a

resident of Burlington, in the county of Des 'Moines and State of Iowa, have inventedcertain new and useful Improvements in Tur: bines; and I do hereby declare the following to be a full, clear, and exact description of the provide improvements of this character in which a cylinder or body is supported in improved mounting and provided with a circuitous spiral steam or other fluid passage around the cylinder, inwhich passage vanes or buckets are located to receive the impact of the fluid to revolve the cylinder or body,

and also provide an improved governor-valve to control the speed of the turbine.

With these and other objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described, and pointed out in the claims. In the accompanying drawings, Figure 1. is

a view in longitudinal section illustrating my improvements. Fig. 2 isa view in cross-section on the line as 00 thereof, and Fig. 3 is a fragmentary end elevation illustrating the governor.

1 and 2 represent the cast bed-frame of my improved turbine, which may or may not be connected by a plate or bar 3, as shown. These bed-frames are both made with alined bearings 4 and 5, respectively, the outer bearings 5 being formed in the ends of steamchambers 6 and suitably packed by means of any movablepacking, and a packing-nut 7 is screwed into the bearings 5. These bearings 4 and 5 support tubular shafts 8, having their inner ends flanged to be securely riveted or bolted to flanged ends of tubular stubs 9 at the opposite ends of the rotary element 10, as clearly shown at 11.

The rotary element 10 comprises a cast cylinder having-radial arms or spiders 12 in its ends connecting the cylinder with stubs 9, and the cylinder is made with an annular spiral flange 13, extending a number of times around the cylinder and from end to end. thereof. A cylindrical outer casing 14 is shrunk onto this spiral flange 13 and constitutes the outer wall of the continuous spiral Specification of Letters Patent. Application filed ul 12. 1906. Serial No. 325.858.

passage 15, formed by the flange and 03 1. inder 10.

Patented an; i 8,

The inlet end of the spiral passage 1'5 is connected by a short finlet duct "or tube "116 with tubular stub 9' at this end, and theme let end of the passage at the otherendof the cylinder is connected by a' duct with the othertubular stub '9."

The cylinder 10' between the conyolutions of flange 13 is provided withvanes or buckets 18 to receive the impact of the motive ,fluid',

and these vanes 'or buckets may be of various shapes and sizes, and I do not restrict myself inthisparticular, In the inlet-tube 16 a rotary valve or'cock een 1 19 is located and is provided with a weighted arm 20 on its outer end, connected by acoiled spring 21 with'stub' 9and constitutin agojvv ernor, as it will be seen, the centrifuga action of the rapidly-revolving cylinder will tend to throw the arm 20 outward against the action of spring 21 and close or partially close valve 19, thus regulating the flow of fluid to the rotary element, and hence govern the speed of the turbine.

The inlet-pipe 22 communicates With the chamber 6 at one end of the engine, and an exhaust-pipe 23 communicates with the chamber 6 at the other end.

The operation of my improvements is as follows: Steam or other motive fluid from pipe 22 enters chamber 6 at this end of the engine, flows through shaft 8, stub 9, and tube 16 into passage 15, and thence passes through the passage 15 around and around the rotary element 10 and transmits motion to the rotary element by reason of its frictional contact and the resistance afforded by the buckets or vanes 18 to revolve the rotary element at high speed, the governor-valve 19 serving to regulate the flow of motive fluid and consequent speed of the turbine, as above explained. The fluid escapes from the end of passage 15 through tube 17, stub 9, shaft 8, and chamber 6 into pipe 23, and the flow of fluid is continuous, save when stopped or retarded by the governor.

A pulley may be secured on one of the shafts 8 to take off power, and a great many slight changes might be made in thegeneral form and arrangement of the parts described without departing from my invention, and hence I do not restrict myself to the precise details set forth, but consider myself at liberty to make such slight changes and alterations as any an within the spirit and' scope the rotary element, ducts or tribes in theretary member communicating respectively" admitting motive fluid to one of said tubes or ducts-,- means 'for permitting" exhaust of fluid froin"'the other ductbr tube;- a valve inthe '15 inlet'duct'or tu be'anda gevemor -emi'edby the'rdtary'member and eontrdlli'ng'saidhave.

2. In a turbine; the-combination withlja r0 tary element having-'anannular*spiral-fluid passageyofhollow shafts supporting opposite ends of said rotary element,- tu'bes connecting the respective ends-of thefluid-passage' with the hollbw-s'hafits'g-a governor valv'e in one-of said tu'bes, and "an inlet-chamber inclosing one end of one of said shafts-and an' exhaust- .cHam oi-fnewsingthe end ofthe other shaft.

3. In a turbine the combination with a ro tary element havin an annular spiral fluidpassage, of-hollow s afts supporting opposite ends of the rotary element and communicatingwith the respective ends of the fluid-passage, a fluid-inlet chamber inclosing one end of one shaft and provided with a bearing therefor, a fluid-outlet or exhaust chamber inclosing the'end-of the other shaft and provided with a shaft therefor, and vanes or buckets in the spiral'fluid-passage? 49 A turbihecomprising a cylinder having anannnlar spiraliflange, a cylindrical easin shrunk onto said flange and formin -a Spirit fluid 'passage, buckets or vanes in saidpassageytubula'r strt'b's at t'hends of the cylinder,

,andtubes connecting said stubs with t'he re' spective ends of the passage;

In testimony wliereofi-l have signed this specification in thepresence of two subseribing Witnesses.

FRED D. MIBLARD. Witnesses:

CHAS: C: CLARK, JNo. J; SEERIZEY. 

